All at once: Microwave irradiation of a metal‐free mixture of propargyl enolethers and primary amines generates substituted alkyl 1,2‐dihydropyridine‐3‐carboxylates in excellent yields through a domino process (see scheme). The obtained 1,2‐dihydropyridines feature four possible diversity points and a chemical handle for complexity‐diversity generation (carboxylic ester at the C3 position).
A Robust and General Protocol for the Lewis-Base-Catalysed Reaction of Alcohols and Alkyl Propiolates
作者:David Tejedor、Sergio J. Álvarez-Méndez、Juan M. López-Soria、Víctor S. Martín、Fernando García-Tellado
DOI:10.1002/ejoc.201301303
日期:2014.1
This research was supported by the Spanish Ministerio de Economia y Competitividad (MICINN) and the European Regional Development Fund (CTQ2011-28417-C01-01 and CTQ2011-28417-C02-02). S. J. A.-M. thanks the Spanish Ministerio de Educacion y Ciencia (MEC) for an FPU grant.
microwave-assisted diversity-oriented domino synthesis of functionalized alkyl nicotinates from propargyl vinylethers is described. The domino manifold comprises a complex network of reactions involving at least five distinct chemical steps. The obtained alkyl nicotinates incorporate two diversity points at the ring and one ester functionality as convenient handles for further elaboration.